Remove code that analyzes tos values from tickprocessor

src/profile-generator.cc

Index: src/profile-generator.cc
diff --git a/src/profile-generator.cc b/src/profile-generator.cc
index e4c750cb83c1dbc8b489f2a08779d3b43ccacb0d..eacabeff4f1ab8c882b10c038052d2335d973759 100644
--- a/src/profile-generator.cc
+++ b/src/profile-generator.cc
@@ -894,7 +894,7 @@ void ProfileGenerator::RecordTickSample(const TickSample& sample) {
   if (sample.pc != NULL) {
     *entry++ = code_map_.FindEntry(sample.pc);
 
-    if (sample.has_external_callback) {
+    if (sample.external_callback) {
       // Don't use PC when in external callback code, as it can point
       // inside callback's code, and we will erroneously report
       // that a callback calls itself.